4000 PSI 21" Surface Cleaner for Power Washers. 8 GPM. Width (in) 21 Max. Pressure 4000 Max. Flow Rate (GPM) 8 Max. Temperature (°F) 212 For use with hot or cold power washing equipment. A surface cleaner attaches to a hot or cold pressure washer and can be used on virtually any flat surface to dramatically reduce cleaning time. Surface cleaners are ideal pressure washer parts for driveways, parking lots, garage floors, tennis courts, decks, or just about any other flat surface. Most surface cleaners resemble a floor sweeper or lawn mower, depending on the make and model. They allow the user to “mow” a straight path, rather than the sweeping back and forth motion typically used when cleaning with a pressure washer wand. For effortless work and visibly greater cleanliness, consider a surface cleaner like the Hotsy Cyclone—it saves time and eliminates user fatigue. Professional Grade Equipment -durable stainless steel, strong spray bar, contractor tested